I have been watching every MMA that comes on, and when i do, it feels like i could be out there.
i train myself at the moment in Dallas, Texas.
but its like im not doing the right things?.. what would be the best fittness training techniques for me?.. im 18 weigh in at 165. 5'9.

you also have the option of not training pure mma right off the bat....

you could try forms of martial arts first that will help you when you integrate them in the future...

i started with judo (really cheap right now since it is not so popular and there are lots of good schools) then moved to muay thai then finally to BJJ.. i have to add wrestling in the mix but i have no plans to be a pro fighter...

Are you going to college? A lot of colleges have tons of fighting resources. I am transfering to a new school were there a clubs in boxing, kick boxing, wrestling, Judo, and classes in other martial arts diciplines.